[{"name":"SP-181034","title":"TR 33.841 Study on the support of 256-bit algorithms for 5G","source":"SA WG3","contact":"Mirko Cano Soveri","contact-id":41957,"tdoctype":"draft TR","for":"Approval","abstract":"Abstract of document: The present document details the following: - An assessment of threats and potential countermeasures posed due to quantum computing and a resulting assessment of relevant countermeasures in the 5G system. - An assessment of the timelines for the introduction of any countermeasures, in particular the increase of key lengths to 256 bits. This includes an alignment with the timeline for strengthening asymmetric cryptographic algorithms used in 5G systems. - An assessment of which parts of the 5G system will be affected and in which way. - A Study of full entropy 256 bit keys in the 5G key hierarchy, beginning with the permanent pre-shared key. Including a study into modifying the derivation algorithms in order to derive child keys from the 256-bit master key instead of the 128-bit key. - A study to determine whether a longer MAC is appropriate for 5G. - A study of the coexistence of different size keys. In 3GPP networks, 256-bit keys in 5G will need to coexist w","secretary_remarks":"Approved","agenda_item_sort_order":142,"ainumber":"17C.","ainame":"(FS_256_Algo) - Study on supporting 256-bit algorithms for 5G","tdoc_agenda_sort_order":12330,"status":"approved","reservation_date":"2018-12-03 09:12:08","uploaded":"2018-12-04 12:10:53","revisionof":"","revisedto":"","release":"Rel-16","crspec":33.841,"crspecversion":"1.0.0","workitem":[{"winame":"FS_256_Algo"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"http:\/\/www.3gpp.org\/ftp\/tsg_sa\/TSG_SA\/TSGS_82\/Docs\/SP-181034.zip","group":"SP","meeting":"SP-82","year":2018,"uicc_affected":null,"me_affected":null,"ran_affected":null,"cn_affected":null,"clauses_affected":null,"crsinpack":null,"crsinpacknumber":0}]